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Liqin Qiu

Hong Kong Polytechnic University

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Proceedings of the National Academy of Sciences of the United States of America | 2007

Enantioselective hydrogenation of α-aminomethylacrylates containing a free N H group for the synthesis of β-amino acid derivatives

Liqin Qiu; Mahavir Prashad; Bin Hu; Kapa Prasad; Oljan Repic; Thomas J. Blacklock; Fuk Yee Kwong; Stanton Hon Lung Kok; Hang Wai Lee; Albert S. C. Chan

We describe highly enantioselective synthesis of β-amino acid derivatives (1a-c) using asymmetric hydrogenation of α-aminomethylacrylates (2a-c), which contain a free basic NH group, as the key step. The α-aminomethylacrylates (2a-c) were prepared using the Baylis–Hillman reaction of an appropriate aldehyde with methyl acrylate followed by acetylation of the resulting allylic alcohols (4a-b) and SN2′-type amination of the allylic acetates (3a-b).

Journal of the American Chemical Society | 2006

A New Class of Versatile Chiral-Bridged Atropisomeric Diphosphine Ligands: Remarkably Efficient Ligand Syntheses and Their Applications in Highly Enantioselective Hydrogenation Reactions

Liqin Qiu; Fuk Yee Kwong; Jing Wu; Wai Har Lam; Shusun Chan; Wing-Yiu Yu; Yue-Ming Li; Rongwei Guo; Zhong-Yuan Zhou; Albert S. C. Chan

Journal of Organic Chemistry | 2003

A convenient, one-step synthesis of Optically active tertiary aminonaphthol and its applications in the highly enantioselective alkenylations of aldehydes

Jian-Xin Ji; Liqin Qiu; Chiu Wing Yip; Albert S. C. Chan

Proceedings of the National Academy of Sciences of the United States of America | 2004

Remarkably diastereoselective synthesis of a chiral biphenyl diphosphine ligand and its application in asymmetric hydrogenation.

Liqin Qiu; Jing Wu; Shusun Chan; Terry T.-L. Au-Yeung; Jian-Xin Ji; Rongwei Guo; Cheng-Chao Pai; Zhong-Yuan Zhou; Xingshu Li; Qing-Hua Fan; Albert S. C. Chan

Organic Letters | 2004

Novel chiral dendritic diphosphine ligands for Rh(I)-catalyzed asymmetric hydrogenation: remarkable structural effects on catalytic properties.

Bing Yi; Qing-Hua Fan; Guo-Jun Deng; Yue-Ming Li; Liqin Qiu; Albert S. C. Chan

Chemistry: A European Journal | 2005

Rhodium-catalyzed asymmetric aqueous pauson-khand-type reaction

Fuk Yee Kwong; Yue-Ming Li; Wai Har Lam; Liqin Qiu; Hang Wai Lee; Chi Hung Yeung; Kin Shing Chan; Albert S. C. Chan

Organic Letters | 2002

Synthesis of Novel Diastereomeric Diphosphine Ligands and Their Applications in Asymmetric Hydrogenation Reactions

Liqin Qiu; Jianying Qi; Cheng-Chao Pai; Shusun Chan; Zhong-Yuan Zhou; Michael C. K. Choi; Albert S. C. Chan

Advanced Synthesis & Catalysis | 2005

Rhodium-BisbenzodioxanPhos Complex-Catalyzed Homogeneous Enantioselective Pauson–Khand-Type Cyclization in Alcoholic Solvents

Fuk Yee Kwong; Hang Wai Lee; Liqin Qiu; Wai Har Lam; Yue-Ming Li; Hoi-Lun Kwong; Albert S. C. Chan

Tetrahedron-asymmetry | 2006

Iridium-catalyzed cascade decarbonylation/highly enantioselective Pauson–Khand-type cyclization reactions

Fuk Yee Kwong; Hang Wai Lee; Wai Har Lam; Liqin Qiu; Albert S. C. Chan

Advanced Synthesis & Catalysis | 2004

Synthesis of New Chiral Aryl Diphosphite Ligands Derived from Pyranoside Backbone of Monosacharides and Their Application in Copper‐Catalyzed Asymmetric Conjugate Addition of Diethylzinc to Cyclic Enones

Lailai Wang; Yue-Ming Li; Chiu-Wing Yip; Liqin Qiu; Zhong-Yuan Zhou; Albert S. C. Chan

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Albert S. C. Chan

Sun Yat-sen University

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Fuk Yee Kwong

Kyoto University

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Wai Har Lam

Hong Kong Polytechnic University

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Yue-Ming Li

Hong Kong Polytechnic University

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Hang Wai Lee

Hong Kong Polytechnic University

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Zhong-Yuan Zhou

Hong Kong Polytechnic University

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Qing-Hua Fan

Chinese Academy of Sciences

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Shusun Chan

Hong Kong Polytechnic University

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Albert S. C. Chan

Sun Yat-sen University

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Jian-Xin Ji

Chinese Academy of Sciences

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